Cyber Missions 8 - S1.E8

Bumblebee watches a recorded message from Optimus Prime telling him it's important to always be on his guard. So engrossed is Bumblebee in the message, that he lets Ironhide knock him in the head. Ironhide says the Decepticons pick on Bumblebee because he's small and appears to be an easy target. Bumblebee tries to assert himself, and ends up knocked on his can. He barely has time to get up before Ironhide, now in vehicle mode, spins him around.

Having finally had enough, Bumblebee returns fire, but his main weapon seizes up in the cold. Ironhide charges him, and the pair fall to the ground, but Ironhide immediately stops, noting that they almost "smashed one of the locals". Bumblebee sees only a flower growing through the ice, but Ironhide tells him to look closer before making him swear not to tell the humans. He reminds Bumblebee of their mission to protect all sentient life...